Ice core drill



April 7, 1959 L. R. TITECA 2,880,968

ICE CORE DRILL Filed :Dec; 18, 1956 I NV EN TOR.

b02121: 2. fi iw A'ITD RN EYE United States Patent ICE CORE DRILL LouisR. Titeca, Darby, Mont.

Application December 18, 1956, Serial No. 629,113

2 Claims. (Cl. 255-69) This invention relates to core drills usedprimarily for cutting holes through ice such as in ice fishing andtrapping, and in particular an elongated tube having arcuate cuttingblades on the lower end with wire extended from the cutting blades andwrapped in spirals around the tube and with upper ends of the wiresadjustably mounted on ends of a clamp extended across the upper end ofthe tube, the clamp providing mounting means for a brace or otherrotating means.

The purpose of this invention is to provide an improved core drill inwhich the parts may readily be removed for sharpening and repairing.

Core drills have been provided in different types and designs and suchdrills are used for various purposes, however, conventional drills forthis use are comparatively complicated and heavy and for trapping andfishing it is desirable to provide a core drill of relatively lightweight and that may readily be assembled in the field. With this thoughtin mind this invention contemplates a core drill formed on an elongatedtube with cutting blades mounted on one end, and a clamp mounted on theopposite end, in which spirally disposed wires extend from the cuttingblades to the clamp, and wherein the clamp provides mounting means for abrace.

The object of this invention is, therefore, to provide an improved coredrill for ice fishing and trapping that is readily assembled andmanually operated.

Another object of the invention is to provide an improved core drillparticularly adapted for use in the field in which the parts of thedrill are readily repaired.

A further object of the invention is to provide an improved core drillwhich is of a simple and economical construction.

With these and other objects and advantages in view the inventionembodies an elongated tube having arcuate cutting blades secured to theouter surface of one end with rivets or other fasteners, with a clampsecured in the end opposite to that on which the blades are positionedalso with rivets or other fasteners, with spirally disposed wiresextended from the cutting blades to ends of the clamp, and with a braceextended through and secured to the clamp with lock nuts and the like.

Other features and advantages of the invention will appear from thefollowing description taken in connection with the drawing, wherein:

Figure 1 is a side elevational view of the improved core drill withparts broken away and showing a brace on the upper end of the drill.

Figure 2 is a sectional plan through the upper part of of the drilltaken on line 22 of Fig. 1.

Figure 3 is a vertical section through the upper end of the drillshowing the clamp for mounting upper ends of the spiral wires and alsofor attaching the brace to the drill.

Figure 4 is a vertical section similar to that shown in Fig. 3 showing amodification wherein a drill shank is secured in the clamp at the upperend of the drill with lock nuts.

Figure 5 is a view looking upwardly toward the lower end of the drillwith the parts shown on an enlarged scale.

Referring now to the drawing wherein like reference characters denotecorresponding parts the improved core drill of this invention includes atube 10, which may be made of aluminum, or other suitable material,arcuate cutting blades 11 and 12 secured by rivets or other fasteners 13to the outer surface of the tube 10, spirally disposed wires 14 and 15secured to the tube 10 with rivets or other fasteners 16 and 17positioned at upper ends of the cutting blades 11 and 12, a clamp 18having depending flanges 19 -and 20 at the ends with the flanges securedto the outer surface of the tube 10 with rivets or other fasteners 21,cars 22 and 23 extended from opposite ends of the clamp 18 andpositioned to hold eye bolts 24 and 25 to which upper ends of the wires14 and 15 are connected and a brace 26 having a threaded stud 27 that issecured in the horizontal bar of the clamp 18 with nuts 28 and 29particularly as illustrated in Fig. 3.

The lower end of the tube 10 is provided with notches 30 and 31 that arepositioned in registering relation with the sharp cutting edges 32 and33 of the blades 11 and 12, as shown in Figs. 1 and 5, and the lowerends of the wires 14 and 15 which may be formed of round or squarealuminum are provided with loops 34 that are positioned on the pins orrivets 16 and 17 and the upper ends are provided with eyes 35 and 36that extend through eyes 37 and 38 of the eye bolts 24 and 25. Theshanks of the eye bolts extend through openings in the cars 22 and 23and with nuts 39 and 40 threaded on the ends of the eye bolts tension inthe wires may be increased or decreased.

The brace 26, for rotating the core drill may be of conventional designhaving a knob 41 at the upper end and a grip 42 on the U-shapedintermediate portion from which the shank 27 extends. With the shankthreaded, as illustrated in Fig. 3 a special brace is provided whereaswith the device provided with a threaded shank 43 having a conventionalstud 44 on the upper end representing the end on the end of aconventional drill shank, a conventional brace may be used.

In the design shown in Fig. 4 the shank 43 is secured in a clamp 45,similar to the clamp 18 with lock nuts 46 and 47 and flanges 48 and 49on the ends of the clamp are secured to the wall of a tube 50 withsuitable fasteners 51.

With the parts assembled as illustrated and described the tubular coredrill may be rotated by the brace to cut an opening through ice and withthe diameter of the tube increased or decreased a hole of any suitablesize may be formed.

With the parts formed in this manner wires and also the cutting bladesand mounting elements may readily be removed and replaced.

Although it is suggested that the parts may be made of aluminum, it willbe understood that the parts may be made of any suitable material.

It will be understood that modifications, within the scope of theappended claims, may be made in the design and arrangement of the partswithout departing from the spirit of the invention.

What is claimed is:

1. In a core drill, the combination which comprises an elongated tube,angularly disposed blades with sharp cutting edges mounted on one end ofthe tube, the tube having notches in the wall thereof positioned inregistering relation with the sharp cutting edges of the blades, a clamphaving depending flanges thereon that are secured to the outer surfaceof the tube, ears extended from the opposite edges of said flanges, saidclamp being mounted on the end of the tube opposite to that on which thePatented Apr. 7,

chips cut by the blades upwardly to the upper end of a hole cut by thedrill, eye bolts connecting upper ends of the spiral members to ears ofthe clamp, rivets connecting lower ends" of the spiral members to thetube at points following the cutting blades and means for attaching abrace to the clamp.

In acore drill, the. combination which comprises an elongated tube,angularly disposed blades with sharp cutting edges mounted on one end ofthe tube, the tube having notches in the wall thereof positioned inregistering relation with the sharp cutting; edges of the blades, aclamp having depending flanges thereon that are setcured' to the outersurface of the tube, ears extended 15 1,857,585

from the opposite edges of said flanges, said clamp being mounted on theend of the tube opposite to that on which the blades are positioned,spiral members extended from the bladesaround the tube; eye boltsconnecting upper ends of the spiral members to ears of the clamp, rivetsconnecting lower ends of the spiral members to the tube at pointsfollowing the cutting blades and a brace having a threaded shank withlock nuts thereon for rotating the tube.

References Cited in the file of this patent UNITED STATES PATENTS220,572 Burgess Oct. 1, 1879 286,599 Fitzgerald Oct. 16, 1883 675,720Deemeri June 4, 1901 Brooks May 10, 1932 2,666,623 Johnson Jan. 19, 1954

